On basis of principle of teaching students according to their aptitude,the students were classed into group A,B and C and trained by bi-level teaching. The effection of theaching implied the bi-level teaching was favourable to activate the initiative and enthusiasm of study,and was of great advantage to the ability of clinic practices,so did the clinic thinking training. It was reasonable to popularize and persist in bi-level teaching in clinic practice in prosthetic dentistry.